首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
admin
2010-01-07
34
问题
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually loud. A late-model jumbo 747, for example, creates 100 or more decibels of sound over an eight-square-kilometer area. The Concorde spreads a 100-decibel-plus blanket of noise over some 140 square kilometers. On takeoff, the Concorde sounds like four F-4 fighter jets taking off at once. Its penetrating, low-frequency rumble makes the Concorde "completely distinctive" from other jets.
What bothers noise experts is that plenty of commonplace machines are just as loud as, or even louder than, the Concorde. A sanitation truck can be noisier, and so can a heavy diesel truck pulling away from a stop sign. One expert who has gone out of his way to dramatize the prevalent offensiveness of the city sound-scale is Dr. Thomas H. Fay, director of speech and hearing at Columbia-Presbyterian Medical Center in New York. Dr. Fay took a sound-meter into a New York City subway and proved that an approaching train can be twice as loud as the Concorde.
Since World War Ⅱ, the number of the high-powered noise-makers, from trucks and motorcycles to air conditioners and sirens has increased almost geometrically. It’ s no wonder that in many areas of the country, especially in the suburbs, the average sound level has doubled in 20 years. Noise experts estimate that city noises are increasing a half-decibel a year. They found that in 1971 the quietest parts of Los Angeles--thought to be a relatively quiet city--were louder than the loudest districts of New York in 1937.
From the last sentence we can learn that ______ .
选项
A、city noises are increasing rapidly in Los Angeles
B、city noises are increasing slowly but steadily in Los Angeles
C、in 1971 Los Angeles was louder than New York
D、New York was very quiet in 1937
答案
A
解析
本题为逻辑推理题,“洛杉矶噪音增长速度”就是第三段所讲的二次世界大战后城市噪音按几何倍增长的具体例子。
转载请注明原文地址:https://kaotiyun.com/show/WrPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Fromhervantagepointshewatchedthemaindoorsswingopenandthefirstarrivalspourin.Thosewhohadbeenattheheadoft
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond【31】______istos
Whenaconsumerfindsthathispurchasehasafaultinit,whatisthefirstthingheshoulddo?
Whatnaturalresourcesdidthesouthernparthave?
Mostgrowingplantscontainmuchmorewaterthanallothermaterialscombined.C.R.Barneshassuggestedthatitisasproperto
Millionsofman-hoursarelosttoindustrythroughemployeessufferingbackacheorstraincausedbyoperatingpoorlydesignedma
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
Itisgenerallyacknowledgedthatfamiliesarenownotascloseastheyusedtobe.Givepossiblereasonsandyourcommendations
【B1】ThefreeenterprisesystemhasproducedatechnologycapableofprovidingtheAmericanconsumerwiththelargestandmostva
随机试题
6个月患儿吐、泻3天,大便10~15次/天,呈蛋花汤样,尿量极少,皮肤弹性差,可见花纹,前囟、眼窝明显凹陷,四肢厥冷,大便镜检偶见白细胞,血清钠135mmoL/L。应诊断为
行政程序法
Hestoodononeleg,______againstthewall.whilehetookoffhisshoe.
关于设备磨损的补偿方案,下列说法正确的是()。
卤代烷灭火系统模拟喷气试验时,宜采用()进行。
根据公司法律制度的规定,有限责任公司的成立日期为()。(2015年)
根据惠更斯一菲涅耳原理,若已知光在某时刻的波阵面为S,则S的前方某点P的光强决定于波阵面S上所有面积元发出的子波各自传到P点的()。
房地产泡沫
Communication via e-mail is by far the most common Internet activity. You can(71 )with anyone in the world who has an Internet a
要求在输入学生所属学院时,学院的名称中必须包括汉字"学院",应定义字段的属性是
最新回复
(
0
)